MD

MD, Md, mD or md may refer to:

Medicine

 * M.D. (from Latin Medicinae Doctor) or Doctor of Medicine, a medical degree
 * MD (Ayurveda), a medical degree in India
 * MD (Homeopathy), a medical degree in India
 * Ménière's disease, a disorder of the inner ear
 * Muscular dystrophy, a group of diseases involving breakdown of skeletal muscles

Places

 * Moldova (ISO country code MD)
 * Maryland (US postal abbreviation MD)
 * Magdeburg (vehicle plate prefix MD), a city in Germany
 * Mödling District (vehicle plate prefix MD), in Lower Austria, Austria

People

 * Muhammad (name) or Mohammed (Md)

Music

 * Main droite or mano destra (MD or m.d.; "right hand"), in piano scores
 * Music director
 * Mini Disc

Other arts, entertainment, and media

 * MDs (TV series), 2002
 * Materiali e discussioni per l'analisi dei testi classici, ("Materials and discussions for the analysis of classical texts"), an Italian journal
 * Murder Drones, an Australian animated web series

Brands and enterprises

 * Air Madagascar, IATA airline code
 * McDonnell Douglas aircraft model prefix
 * MD Helicopters

Computing

 * .md, Internet top-level domain for Moldova
 * Markdown (file extension .md), a format
 * Microdrive, a type of miniature hard drive
 * mkdir or, "make directory" command
 * Multiple device, as in Linux mdadm device driver
 * Sega Genesis or Mega Drive, a video game console

Other uses in science and technology

 * Mean absolute difference
 * Mendelevium, symbol Md, a chemical element
 * Mesoscale discussion in Storm Prediction Centers and Weather Prediction Centers
 * Methyldichloroarsine, a chemical warfare agent
 * Millidarcy (mD), a unit of fluid permeability
 * Molecular dynamics
 * Membrane distillation
 * Earthquake duration magnitude

Other uses

 * MD, 1500 in Roman numerals
 * Majority decision, in full-contact combat sports
 * Managing director, of a company
 * Marque déposée or trademark in Canada in Unicode subscripts and superscripts
 * Match Director in International Practical Shooting Confederation match
 * Military districts of Russia, sometimes abbreviated as MD
 * Mandal, an administrative sub division (third-tier) in India
 * MDMA, sometimes abbreviated as MD